It all links up. . . the Casa Muertos come, and bring Jolly back, then the invasions. . . the ghosts need help, two are left. But heres the thing, notice how all the weapons have something idk undead themed? The claw on the staff, the Jolly Roger Doll, the Aztec Gold Sword which caused the undead curse in Potc 1, the quad pistol with a weird design on the bottom... and finally the dagger covered with jewels
. . . we couldn't resist it from Rott... wonder if theres a link?